中国水稻科学2011，Vol.25Issue(4)：443-446,4.DOI:10.3969/j.issn.1001-7216.2011.04.016
基于高光谱遥感的水稻冠层吸收光合有效辐射的估算研究
Estimation of Rice Absorbed Photosynthetically Active Radiation by Hyperspectral Remote Sensing
摘要
Abstract
Based on hyperspectral remote sensing data, correlations between absorbed photosynthetic active radiation (APAR) and spectral reflectance, first derivative spectra and second derivative spectra of APAR were analyzed. And spectral reflectance, derivative spectra and vegetative indices were used to establish APAR estimating models. The results showed that the correlation between the optimal bands of hyperspectral reflectance, the first derivative spectra, the second derivative spectra and APAR were highly significant. The first derivative spectra could better estimate APAR with the determinant coefficient of 0. 5218 at 769 nm; The model based on the five vegetation indices combining best band could also achived better accuracies since the determine coefficients were all above 0. 67, among which renormalized difference vegetation index RDVI (758,781) was the best to estimate APAR with the coefficient of 0. 7585.关键词
水稻/高光谱遥感/吸收光合有效辐射/植被指数Key words
ice/ hyperspectral remote sensing/ absorbed photosynthetic active radiation/ vegetation index分类
农业科技引用本文复制引用
辛明月,殷红,张涛,张美玲..基于高光谱遥感的水稻冠层吸收光合有效辐射的估算研究[J].中国水稻科学,2011,25(4):443-446,4.基金项目
辽宁省教育厅重点实验室项目(LS2010146). （LS2010146）
